[INFO] fetching crate drone-cortex-m-svd 0.7.0...
[INFO] documenting drone-cortex-m-svd-0.7.0 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate drone-cortex-m-svd 0.7.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate drone-cortex-m-svd 0.7.0 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate drone-cortex-m-svd 0.7.0
[INFO] finished tweaking crates.io crate drone-cortex-m-svd 0.7.0
[INFO] tweaked toml for crates.io crate drone-cortex-m-svd 0.7.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3099cb61bf818fa0008210f7ed7272c10f62e61a34316692921ea6b90b2b49a1
[INFO] running `Command { std: "docker" "start" "-a" "3099cb61bf818fa0008210f7ed7272c10f62e61a34316692921ea6b90b2b49a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3099cb61bf818fa0008210f7ed7272c10f62e61a34316692921ea6b90b2b49a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3099cb61bf818fa0008210f7ed7272c10f62e61a34316692921ea6b90b2b49a1", kill_on_drop: false }`
[INFO] [stdout] 3099cb61bf818fa0008210f7ed7272c10f62e61a34316692921ea6b90b2b49a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 293562028d350cfb6303d2b1bcb0ce87b4db7c90af77268b91a18f780e833d3a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "293562028d350cfb6303d2b1bcb0ce87b4db7c90af77268b91a18f780e833d3a", kill_on_drop: false }`
[INFO] [stderr]     Checking xml-rs v0.3.6
[INFO] [stderr]     Checking syn v0.11.11
[INFO] [stderr]     Checking serde-xml-rs v0.2.1
[INFO] [stderr]  Documenting drone-cortex-m-svd v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(range_contains)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `drone-cortex-m-svd`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name drone_cortex_m_svd src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern failure=/opt/rustwide/target/debug/deps/libfailure-93a8d14db5bfdc2a.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-e0f26ad3a807cf6f.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-206cfb4b5fe90396.rmeta --extern serde_xml_rs=/opt/rustwide/target/debug/deps/libserde_xml_rs-ef69aa02a1adbe75.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-3912a75c17f0c7d5.so --extern syn=/opt/rustwide/target/debug/deps/libsyn-5b344e73efa40b26.rmeta --cap-lints=warn --crate-version 0.7.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "293562028d350cfb6303d2b1bcb0ce87b4db7c90af77268b91a18f780e833d3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "293562028d350cfb6303d2b1bcb0ce87b4db7c90af77268b91a18f780e833d3a", kill_on_drop: false }`
[INFO] [stdout] 293562028d350cfb6303d2b1bcb0ce87b4db7c90af77268b91a18f780e833d3a
